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TROJ_ADCLIC.LEX

October 13, 2012
 ALIASES:

Trojan:Win32/Sisproc (Microsoft); Generic.dx!bd3j (McAfee); Trojan.Adclicker (Symantec); PAK:UPX, Trojan-Clicker.Win32.Agent.vsm (Kaspersky); Trojan.Adclicker (Sunbelt); Trojan.Generic.7081212 (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

36,352 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

04 Jun 2012

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Dropping Routine

This Trojan drops the following files:

  • %Windows%\GMarket.ico
  • %Desktop%\Áö¸¶ÄÏ.lnk
  • %Windows%\Auction.ico
  • %Desktop%\¿Á¼Ç.lnk
  • %Windows%\11st.ico
  • %Desktop%\11¹ø°¡.lnk
  • %Favorites%\Áö¸¶ÄÏ.lnk
  • %Favorites%\¿Á¼Ç.lnk
  • %Favorites%\11¹ø°¡.lnk

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %Favorites% is the current user's Favorites folder, which is usually C:\Windows\Favorites on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Favorites on Windows NT, and C:\Documents and Settings\{user name}\Favorites on Windows 2000, XP, and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://www.{BLOCKED}ds.netmac.php?mac=00:50:56:8E:00:F1

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Windows%\GMarket.ico
  • %Desktop%\Áö¸¶ÄÏ.lnk
  • %Windows%\Auction.ico
  • %Desktop%\¿Á¼Ç.lnk
  • %Windows%\11st.ico
  • %Desktop%\11¹ø°¡.lnk
  • %Favorites%\Áö¸¶ÄÏ.lnk
  • %Favorites%\¿Á¼Ç.lnk
  • %Favorites%\11¹ø°¡.lnk

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_ADCLIC.LEX. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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